Hard mode:
Successfully complete the game to unlock a more difficult level of game
play under arrange and original modes.
Hunk scenario and Extreme Battle mode:
Successfully complete the game under the hard difficulty level with the
best rank for Claire's A and B scenarios and Leon's A and B scenarios.
Hunk is a soldier that must reach the second floor of the police station
from the sewer with just battles and no puzzles. Extreme Battle mode
unlocks Chris Redfield and Ada Wong as characters.
Unlimited ammunition:
Press [Up] [Up] [Down] [Down] [Left] [Right] [Left] [Right] [Aim] at the
weapon equip screen.